[jira] [Created] (HBASE-18182) set HBASE_REGIONSERVER_OPTS use UseG1GC will cause regionserver start error

[Fangyuan Deng (JIRA)]

Fangyuan Deng created HBASE-18182:
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             Summary: set HBASE_REGIONSERVER_OPTS use UseG1GC will cause 
regionserver start error
                 Key: HBASE-18182
                 URL: https://issues.apache.org/jira/browse/HBASE-18182
             Project: HBase
          Issue Type: Bug
          Components: regionserver
    Affects Versions: 1.2.6, 1.3.1, 1.1.6, 2.0.0
            Reporter: Fangyuan Deng


when we set in hbase-env.sh to use G1GC 
HBASE_REGIONSERVER_OPTS="$HBASE_REGIONSERVER_OPTS -XX:+UseG1GC -Xms96g -Xmx96g 
-XX:MaxGCPauseMillis=100"

then run ./hbase-daemon.sh start regionserver
Conflicting collector combinations in option list; please refer to the release 
notes for the combinations allowed
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

because the HBASE_OPTS default use CMS and is conflicted with 
HBASE_REGIONSERVER_OPTS

so I add a patch to modify bin/hbase like this

elif [ "$COMMAND" = "regionserver" ] ; then
  CLASS='org.apache.hadoop.hbase.regionserver.HRegionServer'
  if [ "$1" != "stop" ] ; then
    HBASE_OPTS="$HBASE_OPTS $HBASE_REGIONSERVER_OPTS"
    if [[ $HBASE_REGIONSERVER_OPTS == *UseG1GC*  ]] ; then
      HBASE_OPTS=${HBASE_OPTS/'-XX:+UseConcMarkSweepGC'/''}
    fi
  fi




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